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Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/standard_policies.hpp')
| -rw-r--r-- | gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/standard_policies.hpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/standard_policies.hpp b/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/standard_policies.hpp new file mode 100644 index 000000000..1086fd8d0 --- /dev/null +++ b/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/standard_policies.hpp @@ -0,0 +1,158 @@ +// -*- C++ -*- + +// Copyright (C) 2005-2014 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file detail/standard_policies.hpp + * Contains standard policies for containers. + */ + +#ifndef PB_DS_STANDARD_POLICIES_HPP +#define PB_DS_STANDARD_POLICIES_HPP + +#include <memory> +#include <ext/pb_ds/hash_policy.hpp> +#include <ext/pb_ds/list_update_policy.hpp> +#include <ext/pb_ds/detail/branch_policy/null_node_metadata.hpp> +#include <ext/pb_ds/tree_policy.hpp> +#include <ext/pb_ds/trie_policy.hpp> +#include <ext/pb_ds/tag_and_trait.hpp> +#include <tr1/functional> + +namespace __gnu_pbds +{ + namespace detail + { + /// Primary template, default_hash_fn. + template<typename Key> + struct default_hash_fn + { + /// Dispatched type. + typedef std::tr1::hash<Key> type; + }; + + /// Primary template, default_eq_fn. + template<typename Key> + struct default_eq_fn + { + /// Dispatched type. + typedef std::equal_to<Key> type; + }; + + /// Enumeration for default behavior of stored hash data. + enum + { + default_store_hash = false + }; + + /// Primary template, default_comb_hash_fn. + struct default_comb_hash_fn + { + /// Dispatched type. + typedef direct_mask_range_hashing<> type; + }; + + /// Primary template, default_resize_policy. + template<typename Comb_Hash_Fn> + struct default_resize_policy + { + private: + typedef typename Comb_Hash_Fn::size_type size_type; + + typedef direct_mask_range_hashing<size_type> default_fn; + typedef is_same<default_fn, Comb_Hash_Fn> same_type; + typedef hash_exponential_size_policy<size_type> iftrue; + typedef hash_prime_size_policy iffalse; + typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type; + typedef typename cond_type::__type size_policy_type; + + typedef hash_load_check_resize_trigger<false, size_type> trigger; + + public: + /// Dispatched type. + typedef hash_standard_resize_policy<size_policy_type, trigger, + false, size_type> type; + }; + + /// Default update policy. + struct default_update_policy + { + /// Dispatched type. + typedef lu_move_to_front_policy<> type; + }; + + /// Primary template, default_probe_fn. + template<typename Comb_Probe_Fn> + struct default_probe_fn + { + private: + typedef typename Comb_Probe_Fn::size_type size_type; + typedef direct_mask_range_hashing<size_type> default_fn; + typedef is_same<default_fn, Comb_Probe_Fn> same_type; + typedef linear_probe_fn<size_type> iftrue; + typedef quadratic_probe_fn<size_type> iffalse; + typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type; + + public: + /// Dispatched type. + typedef typename cond_type::__type type; + }; + + + /// Primary template, default_trie_access_traits. + template<typename Key> + struct default_trie_access_traits; + +#define __dtrie_alloc std::allocator<char> +#define __dtrie_string std::basic_string<Char, Char_Traits, __dtrie_alloc> + + /// Partial specialization, default_trie_access_traits. + template<typename Char, typename Char_Traits> + struct default_trie_access_traits<__dtrie_string> + { + private: + typedef __dtrie_string string_type; + + public: + /// Dispatched type. + typedef trie_string_access_traits<string_type> type; + }; + +#undef __dtrie_alloc +#undef __dtrie_string + + } // namespace detail +} // namespace __gnu_pbds + +#endif // #ifndef PB_DS_STANDARD_POLICIES_HPP |